Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Gibbous 95%

19:19

03:35

11 Bad
12 OK
13 OK
14 OK
15 OK
16 OK
17 OK
18 OK
19 OK
20 Bad
21 OK
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:00, Set: 20:04, Transit: 13:02. Moon - Rise: 19:19, Set: 03:35. Civil Dark: 20:41 - 05:24. Nautical Dark: 21:28 - 04:37. Astro Dark: 22:22 - 03:44

Total Clouds (% Sky Obscured)

47
42
27
26
18
21
25
31
21
48
40
38
39
56
57
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

22
4
9
2
3
19
23
24
19
30
29
32
18
16
8
9
0
0
2
35
35
54
59
60

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
13
57
95
99
98
97
92
97

High Clouds (% Sky Obscured)

2
1
1
5
14
1
1
5
1
22
12
6
21
41
53
100
100
100
100
100
100
100
100
88

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
8
10
11
8
5

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
18
18
19
20
20
19
18
16
14
12
11
10
9
8
8
7
7
7
7
7
8
10
11

Chance of Frost

Temperature (°C)

21
21
21
22
21
21
20
20
19
18
17
17
17
17
17
17
17
17
17
17
17
19
20
21

Feels Like (°C)

18
18
18
19
18
17
16
16
17
17
15
16
17
17
17
16
16
16
15
16
17
18
19
20

Dew Point (°C)

13
13
14
14
14
14
13
14
14
15
15
15
15
16
15
15
15
15
14
14
14
17
17
17

Relative Humidity (%)

61
60
61
63
62
65
65
68
73
82
85
89
89
92
90
90
87
86
85
85
82
86
84
79

Pressure (mb)

1016
1016
1015
1015
1015
1015
1015
1014
1014
1014
1015
1015
1015
1014
1014
1014
1013
1013
1013
1013
1014
1014
1014
1014

Ozone (du)

332
329
328
330
332
332
329
325
322
319
319
318
316
316
315
315
315
314
313
313
314
318
322
323

Wednesday 26

Waxing Gibbous 99%

19:35

04:53

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:02, Set: 20:02, Transit: 13:01. Moon - Rise: 19:35, Set: 04:53. Civil Dark: 20:39 - 05:25. Nautical Dark: 21:25 - 04:39. Astro Dark: 22:19 - 03:47

Total Clouds (% Sky Obscured)

88
65
87
100
100
100
100
68
100
100
100
87
97
99
100
98
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

23
26
50
70
20
15
10
15
22
30
46
32
36
13
23
28
43
44
56
41
65
89
81
71

Medium Clouds (% Sky Obscured)

77
10
5
4
0
3
3
3
2
3
0
0
4
59
22
19
97
23
99
96
100
99
98
100

High Clouds (% Sky Obscured)

50
36
59
73
72
72
100
57
100
100
100
64
92
95
100
91
100
100
100
98
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
2
2
2
2
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Moderate Rain
Very Light Rain
None

Precipitation Probability (%)

8
32
36
33
20
26
34
29
24
19
7
5
1
0
0
3
18
70
95
95
95
95
95
83

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.9
0.6
1.6
2.6
0.3
0

Wind Speed/Direction (mph)

12
13
14
14
13
16
17
16
13
12
11
9
8
7
6
6
6
7
8
6
7
7
9
10

Chance of Frost

Temperature (°C)

22
23
24
24
24
23
22
21
20
19
19
18
18
18
18
17
18
18
18
18
18
19
19
20

Feels Like (°C)

21
21
22
23
22
20
19
18
19
17
17
16
18
17
17
17
18
18
18
18
20
20
20
20

Dew Point (°C)

18
15
15
16
16
15
16
16
13
13
14
14
15
16
16
15
16
16
16
16
17
18
18
19

Relative Humidity (%)

77
59
59
59
63
63
70
75
63
68
72
77
82
86
88
88
88
86
86
88
93
93
95
95

Pressure (mb)

1014
1014
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011
1010
1010
1009
1009
1009
1009
1009

Ozone (du)

323
322
324
325
324
322
321
319
318
318
319
318
318
318
317
317
316
316
315
315
314
316
317
318

Thursday 27

Waxing Gibbous 100%

19:47

06:12

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:04, Set: 20:00, Transit: 13:01. Moon - Rise: 19:47, Set: 06:12. Civil Dark: 20:37 - 05:27. Nautical Dark: 21:23 - 04:42. Astro Dark: 22:15 - 03:50

Total Clouds (% Sky Obscured)

100
100
100
65
67
100
91
100
100
98
100
100
100
100
98
100
100
100
100
100
100
100
100
80

Low Clouds (% Sky Obscured)

73
95
52
59
42
44
51
50
42
34
22
30
32
26
39
48
50
50
42
44
47
45
40
39

Medium Clouds (% Sky Obscured)

98
95
97
65
67
21
5
92
5
57
4
4
9
14
9
98
97
7
85
91
91
5
0
0

High Clouds (% Sky Obscured)

100
100
100
42
53
100
62
68
100
88
100
100
100
99
60
100
100
100
100
100
100
100
100
65

ISS Passover

Visibility (miles)

9
9
9
9
2
3
3
3
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
95
91
67
81
18
4
3
6
8
8
10
12
10
6
9
4
1
4

Precipitation Amount (mm)

2.2
1.1
0.8
1.6
2
0.6
1.4
0.7
0
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
8
8
8
7
8
7
4
4
3
5
6
4
3
3
4
5
6
6
7
8
10
12
13

Chance of Frost

Temperature (°C)

20
20
21
21
23
23
22
21
20
20
19
18
18
18
17
17
17
17
16
16
16
17
18
19

Feels Like (°C)

21
21
21
22
23
23
22
24
21
21
19
17
18
17
17
16
16
15
15
14
14
15
15
17

Dew Point (°C)

19
18
18
16
18
17
14
15
16
16
16
15
16
16
16
15
15
14
14
14
13
13
13
13

Relative Humidity (%)

91
88
86
73
73
66
62
69
77
80
81
80
86
89
89
87
87
85
86
87
85
79
73
65

Pressure (mb)

1008
1008
1008
1008
1007
1007
1006
1006
1006
1006
1007
1006
1006
1006
1006
1006
1005
1005
1005
1004
1004
1005
1004
1004

Ozone (du)

320
320
319
319
321
325
331
332
334
335
336
335
335
336
337
338
338
338
339
341
343
343
344
345

Friday 28

Full Moon 99%

19:57

07:31

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 OK
02 OK
03 OK
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:06, Set: 19:57, Transit: 13:01. Moon - Rise: 19:57, Set: 07:31. Civil Dark: 20:34 - 05:29. Nautical Dark: 21:20 - 04:44. Astro Dark: 22:12 - 03:52

Total Clouds (% Sky Obscured)

72
57
79
90
100
100
86
99
99
88
96
78
66
52
29
25
39
63
81
96
97
98
100
100

Low Clouds (% Sky Obscured)

40
41
51
55
60
55
50
40
50
58
74
60
39
29
22
17
11
18
25
28
43
59
88
78

Medium Clouds (% Sky Obscured)

0
0
4
10
19
21
23
30
34
32
26
13
13
7
6
1
5
5
1
5
94
98
97
97

High Clouds (% Sky Obscured)

49
29
65
87
100
100
57
97
86
15
5
2
43
46
0
4
39
63
76
91
94
98
100
25

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
0
0
1
1
10
13
13
33
36
37
26
12
1
0
1
0
0
0
0
2
27
39
42

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
14
15
16
16
16
16
15
14
13
11
11
10
9
9
8
8
8
8
9
9
10
13
13

Chance of Frost

Temperature (°C)

20
21
22
23
23
23
23
22
21
20
19
19
18
17
17
16
16
15
15
15
15
16
18
18

Feels Like (°C)

18
19
20
19
19
20
19
20
18
17
18
16
16
16
15
17
16
14
13
13
13
14
14
16

Dew Point (°C)

11
10
9
9
9
8
7
7
8
9
9
8
9
11
12
12
12
12
12
13
13
14
13
16

Relative Humidity (%)

56
48
43
41
40
38
37
39
43
49
53
50
54
66
71
75
78
79
83
87
89
85
76
85

Pressure (mb)

1004
1004
1004
1004
1003
1003
1002
1002
1002
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1004
1004

Ozone (du)

345
343
341
340
337
335
333
335
332
328
323
320
319
318
318
315
312
310
310
308
305
307
306
309

Saturday 29

Waning Gibbous 96%

20:07

08:51

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:07, Set: 19:55, Transit: 13:00. Moon - Rise: 20:07, Set: 08:51. Civil Dark: 20:32 - 05:31. Nautical Dark: 21:17 - 04:46. Astro Dark: 22:08 - 03:55

Total Clouds (% Sky Obscured)

100
100
94
51
53
95
65
66
75
58
56
60
69
74
76
68
70
71
72
64
71
75
76
77

Low Clouds (% Sky Obscured)

67
51
58
51
53
75
45
33
41
29
27
31
31
38
34
34
30
24
26
28
36
46
42
47

Medium Clouds (% Sky Obscured)

62
65
17
15
12
7
13
5
4
3
2
5
5
12
22
24
24
24
15
12
14
13
16
11

High Clouds (% Sky Obscured)

25
25
20
12
0
0
0
0
0
0
0
8
18
26
30
33
39
57
70
64
60
75
76
62

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

38
40
38
35
14
19
11
11
18
19
14
16
11
2
15
15
13
30
37
42
51
53
38
27

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
14
14
15
16
16
13
11
9
8
7
6
5
5
6
6
7
8
8
9
10
12
14
17

Chance of Frost

Temperature (°C)

19
19
20
21
21
22
21
20
20
19
18
17
16
16
16
16
16
16
16
16
16
17
18
19

Feels Like (°C)

15
15
17
17
17
18
16
18
18
16
16
16
16
15
14
14
14
15
15
14
14
14
15
15

Dew Point (°C)

16
16
16
10
7
7
9
9
9
10
10
9
10
10
10
11
12
12
13
13
14
13
12
12

Relative Humidity (%)

81
82
77
50
39
39
46
46
51
55
60
61
65
67
69
73
77
80
82
83
86
78
70
63

Pressure (mb)

1004
1003
1003
1002
1002
1002
1002
1002
1002
1002
1002
1003
1003
1003
1003
1003
1003
1004
1004
1004
1004
1004
1005
1005

Ozone (du)

310
315
320
322
322
323
325
324
324
323
321
320
321
322
322
321
319
317
317
318
318
317
317
316

Sunday 30

Waning Gibbous 91%

20:17

10:13

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 OK
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:09, Set: 19:53, Transit: 13:00. Moon - Rise: 20:17, Set: 10:13. Civil Dark: 20:29 - 05:33. Nautical Dark: 21:14 - 04:48. Astro Dark: 22:05 - 03:58

Total Clouds (% Sky Obscured)

73
65
75
87
100
87
76
63
69
74
73
51
28
9
40
66
75
47
36
36
48
63
76
81

Low Clouds (% Sky Obscured)

51
59
60
65
66
62
62
63
69
74
73
51
28
3
7
12
16
24
24
30
42
56
69
75

Medium Clouds (% Sky Obscured)

5
0
7
14
21
47
74
63
69
73
56
34
17
1
12
20
30
15
9
3
4
7
9
9

High Clouds (% Sky Obscured)

24
1
34
67
100
79
58
37
28
19
14
8
6
4
31
48
66
38
15
2
2
2
1
25

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
5
2
5
7
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
Very Light Rain
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

18
10
24
43
54
50
43
37
38
39
53
70
72
67
48
25
17
16
14
8
14
15
15
26

Precipitation Amount (mm)

0
0
0
0
0.2
0
0
0
0
0
0
0.4
0.4
0.4
0.2
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

17
16
16
15
13
11
10
10
10
10
11
12
12
14
15
15
15
15
15
16
17
18
19
21

Chance of Frost

Temperature (°C)

20
21
22
21
20
19
19
19
19
18
17
16
15
15
14
14
14
13
13
14
14
15
16
17

Feels Like (°C)

16
17
18
18
17
16
16
16
17
16
16
16
16
16
15
13
12
11
11
11
11
11
11
11

Dew Point (°C)

12
13
13
12
11
11
10
10
10
11
12
13
13
12
12
12
12
11
11
11
11
11
11
11

Relative Humidity (%)

61
61
58
58
57
56
56
56
56
63
73
82
83
84
84
86
87
86
86
84
83
78
73
68

Pressure (mb)

1005
1005
1005
1005
1004
1004
1004
1003
1002
1002
1002
1002
1002
1002
1002
1002
1001
1001
1002
1002
1002
1003
1004
1004

Ozone (du)

316
317
317
317
318
319
323
327
332
332
332
332
334
336
338
338
338
339
339
340
340
342
343
345

Monday 31

Waning Gibbous 83%

20:29

No Set

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK

Sun - Rise: 06:11, Set: 19:51, Transit: 13:00. Moon - Rise: 20:29, Set: No Set. Civil Dark: 20:27 - 05:35. Nautical Dark: 21:12 - 04:50. Astro Dark: 22:02 - 04:00

Total Clouds (% Sky Obscured)

82
83
74
69
62
57
52
48
55
64
72
64
56
47
36
25
14
19
23
29

Low Clouds (% Sky Obscured)

79
81
74
69
58
48
39
31
31
30
25
16
8
0
5
9
14
18
19
9

Medium Clouds (% Sky Obscured)

9
9
7
5
3
2
0
0
11
22
33
23
12
0
0
0
0
1
1
3

High Clouds (% Sky Obscured)

36
45
34
18
16
10
7
1
2
4
6
20
33
47
32
16
0
0
0
0

ISS Passover

Visibility (miles)

9
8
7
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

31
29
35
35
29
23
18
14
9
6
3
11
11
5
5
3
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

20
19
18
18
17
17
16
15
14
11
9
6
8
9
10
10
11
10
10
9

Chance of Frost

Temperature (°C)

17
17
17
18
18
19
19
19
19
18
16
15
15
14
14
13
12
12
11
11

Feels Like (°C)

12
13
14
12
12
13
13
13
14
14
14
13
13
12
11
10
10
9
9
9

Dew Point (°C)

12
13
14
13
12
12
11
10
8
9
9
9
10
10
10
10
10
9
9
9

Relative Humidity (%)

73
76
81
74
68
62
57
54
51
56
61
66
70
75
79
81
84
86
87
88

Pressure (mb)

1005
1006
1007
1008
1008
1009
1010
1010
1011
1012
1012
1013
1013
1013
1014
1014
1015
1015
1015
1016

Ozone (du)

343
342
341
341
342
343
341
339
338
337
337
336
334
332
330
329
328
327
327
327

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 25/08/26 11:24:11. Forecast: 25/08/26 to 31/08/26. Timezone: UTC+1.00